216.177.0.0/19

Currently announced jointly by AS10367 FiberCast, AS63009 Fibercast Corporation, in the routed prefix 216.177.0.0/19.

Current ASN: AS10367 AS63009; FiberCast
Routed prefix: 216.177.0.0/19; Most specific route covering this prefix
ASNs over time: 2; 2 announcement records
RIR allocation: ARIN; United States · 216.177.0.0/19

Routing data · Nov 2, 2026, 04:24 UTC

ASN historyEvery routed prefix covering 216.177.0.0/19

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
216.177.0.0/19	AS10367	FiberCast	United States	Before monitoring	2026-11-02 04:24	Announcing
216.177.0.0/19	AS63009	Fibercast Corporation	United States	Before monitoring	2026-11-02 04:24	Announcing

More specific routes33 total

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
216.177.0.0/24	AS10367	FiberCast	United States	Before monitoring	2026-11-02 04:24	Announcing
216.177.1.0/24	AS10367	FiberCast	United States	Before monitoring	2026-11-02 04:24	Announcing
216.177.1.0/24	AS63009	Fibercast Corporation	United States	Before monitoring	2026-11-02 04:24	Announcing
216.177.2.0/24	AS63009	Fibercast Corporation	United States	Before monitoring	2026-11-02 04:24	Announcing
216.177.2.0/24	AS10367	FiberCast	United States	Before monitoring	2026-11-02 04:24	Announcing
216.177.4.0/23	AS63009	Fibercast Corporation	United States	Before monitoring	2026-11-02 04:24	Announcing
216.177.4.0/24	AS10367	FiberCast	United States	Before monitoring	2026-11-02 04:24	Announcing
216.177.5.0/24	AS10367	FiberCast	United States	Before monitoring	2026-11-02 04:24	Announcing
216.177.6.0/24	AS10367	FiberCast	United States	Before monitoring	2026-11-02 04:24	Announcing
216.177.8.0/23	AS63009	Fibercast Corporation	United States	Before monitoring	2026-11-02 04:24	Announcing
216.177.8.0/24	AS10367	FiberCast	United States	Before monitoring	2026-11-02 04:24	Announcing
216.177.9.0/24	AS63009	Fibercast Corporation	United States	Before monitoring	2026-11-02 04:24	Announcing
216.177.9.0/24	AS10367	FiberCast	United States	Before monitoring	2026-11-02 04:24	Announcing
216.177.11.0/24	AS10367	FiberCast	United States	Before monitoring	2026-11-02 04:24	Announcing
216.177.12.0/24	AS10367	FiberCast	United States	Before monitoring	2026-11-02 04:24	Announcing
216.177.13.0/24	AS10367	FiberCast	United States	Before monitoring	2026-11-02 04:24	Announcing
216.177.14.0/24	AS10367	FiberCast	United States	Before monitoring	2026-11-02 04:24	Announcing
216.177.20.0/22	AS63009	Fibercast Corporation	United States	Before monitoring	2026-11-02 04:24	Announcing
216.177.20.0/24	AS10367	FiberCast	United States	Before monitoring	2026-11-02 04:24	Announcing
216.177.21.0/24	AS10367	FiberCast	United States	Before monitoring	2026-11-02 04:24	Announcing
216.177.22.0/24	AS10367	FiberCast	United States	Before monitoring	2026-11-02 04:24	Announcing
216.177.23.0/24	AS10367	FiberCast	United States	Before monitoring	2026-11-02 04:24	Announcing
216.177.24.0/24	AS10367	FiberCast	United States	Before monitoring	2026-11-02 04:24	Announcing
216.177.24.0/24	AS63009	Fibercast Corporation	United States	Before monitoring	2026-11-02 04:24	Announcing
216.177.25.0/24	AS10367	FiberCast	United States	Before monitoring	2026-11-02 04:24	Announcing
216.177.26.0/24	AS10367	FiberCast	United States	Before monitoring	2026-11-02 04:24	Announcing
216.177.27.0/24	AS63009	Fibercast Corporation	United States	Before monitoring	2026-11-02 04:24	Announcing
216.177.27.0/24	AS10367	FiberCast	United States	Before monitoring	2026-11-02 04:24	Announcing
216.177.28.0/24	AS10367	FiberCast	United States	Before monitoring	2026-11-02 04:24	Announcing
216.177.29.0/24	AS10367	FiberCast	United States	Before monitoring	2026-11-02 04:24	Announcing
216.177.30.0/24	AS10367	FiberCast	United States	Before monitoring	2026-11-02 04:24	Announcing
216.177.30.0/24	AS63009	Fibercast Corporation	United States	Before monitoring	2026-11-02 04:24	Announcing
216.177.31.0/24	AS10367	FiberCast	United States	Before monitoring	2026-11-02 04:24	Announcing

Change logAll changes

The routes covering this address have had no origin changes since ASNBase started monitoring.

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RIR allocation record

Registry: ARIN
Allocated block: 216.177.0.0/19
Country: United States
Allocation date: 1998-12-30
Status: allocated

From the RIRs’ delegated statistics files. Shows where the addresses are registered, not where they are used.

How monitoring works

Every 2 hours ASNBase takes the bgp.tools global routing table (prefix → origin ASN) and compares it with the previous one. The detected time is the time of that comparison; the actual change can be up to about 2 hours earlier.
Only routes seen by more than 100 bgp.tools peers are listed as changes; routes with less visibility are only kept in the history.
A new announcement counts only if it is still in the next routing table, and a withdrawal only if the prefix is missing from two tables in a row, so short flaps are ignored.
ASNBase has been monitoring since 2026-10-19. “Before monitoring” under “First seen” means the route was already announced when monitoring started; the earlier date is unknown.
Prefixes first seen during the first day of monitoring do not count as new announcements: most of them were simply missing from the table at the moment monitoring started.
Countries and regions follow the ASN’s registration, not the actual location of the IP addresses.